| 摘要 |
FIELD: engines and pumps. ^ SUBSTANCE: invention relates to pumps operated in inclined or horizontal wellbores. Proposed valve comprises body, seat, seat holder, ball and weight arranged to contact said ball. Valve body accommodates coaxial centraliser with hole and central axle supporting guide inclined chute with hole and bulky lower part, and horizontal web in its lower part. Other side of the valve accommodates a sub with taper part facing guide chute and centraliser. Said taper part has a narrow section accommodating valve seat fixed by seat holder. Ball seats between seat and guide on guide horizontal web to contact the seat and roll on over horizontal web. Weight represents second ball in constant contact with first ball, arranged above first ball in space between guide inclined chute and sub taper part. ^ EFFECT: ease of valve closing in inclined or horizontal wellbores. ^ 1 dwg |
